Discharge mechanism for concrete pavers



Nov. 10, 1925.

c. E. FOOTE DISCHARGE MECHANISM FOR CONCRETE PAVERS Filed Jan. 24, 1925 3 Sheets-Sheet 1 Inventor.-

Chanles E]? AV Qua/Au vote,

Nov. 10, 1925. 1,561,144

C. E. FOOTE DISCHARGE MECHANISM FOR CONCRETE PAVERS Filed Jan. 24, 1925 3 Sheets-Sheet 2 26 Inventor:

chanzas- E. Iafe Ail Nov. 10, 1925. 1,561,144

C. E. FOOTE DISCHARGE MECHANISM FOR CONCRETE PAVERS Filed Jan. 24, 1925 3 Sheets-Sheet 3 Ifiuen for: Giaaiiles E. E0 Ze,

4 pivotally mounted as at 5, the upper end of the chute extending into the drum, as shown by the dotted line 6.

This chute is similar in construction to the chute shown in the Patent No. 1,394,160, the chute, when the position shown in Fig. 1, receiving the falling aggregates as they rise in the drum and then drop on approaching the top of the drum; the chute being capable of being then rotated on its pivotal axis 5 to a position shown in Fig. 2; that is, in its non-operative position, and the aggregates will now fall .on the rounded sides of the same and then drop to the bottom of the drum.

Attached to the lower end of this chute, and across the top thereof, is the clamp 7 which is bolted or otherwise fastened, as at 8, and the clamp is also provided with a hub 9 to engage the aforementioned shaft 5. This chute and clamp is supported in turn by the plate 10, fastened on the cross bar 11 and the beam 12. The clamp 7 is also provided with the upstanding arm 13 to which is secured the rod 14 which is adjustablyconnected asat15 to a bell crank lever 16 pivoted asat 17, while at the lower arm of the bell crank is the connecting rod 18, so that a vertical movement of the connecting rod 18 will revolve the chute from the position shown in Fig. 1 to the position shown in Fig. 2, and vice versa.

To impart this movement to the connecting rod 18 there is employed a planetary gearing system comprising the drive shaft 19 which in turn will be driven either directly or indirectly from'the driving means for the drum, and on the outer end of this drive shaft is a collar'20. Idle on this shaft 19 and just to the rear of the collar 20"is the casing 21 on which is the rim '22 over which is passed the brake band 23, while internally of this casing 21 is the orbit gear 24, the casing, of course, provided with the hub 25. The other or rear halfof'the casing is shown at 26, and is also provided with a hub 27 and secured to this casing are the planet gears 28, which are designed to be driven by the sun gear29 keyed to the drive shaft 19. These planet gearsare on the studs 30, as may be clearly seen in Fig. 3. Formed on the outer portion of the rear casing 26 is also a rim 31 which is eccentrically positioned as may be also clearly seen in Fig. 3, and about its periphery is a slot 32 in which is placed aring 33, while clamped to this eccentrically positioned rim is the head 34, it likewise being provided with a groove for the reception of the ring 33 so that .the head 34 may be securely bolted to the eccentrically positioned rim and operate in the usual manner. The head is provided with a lug 35 to which will be bolted vthe lower end of the connecting rod 18. In Fig. 3 I have shown a bearing 36 to hold the two halves of the planetary gear in position, and itwill alsobe'noted in this figure, that a portion 38 of the rear half of the casing extends outwardly beyond the inner portion of the casing 21, and a packing may bein'serted between the two halves to hold the greasein the gear and to keep the dirtout of the same...

Referring again to the'rear half of the casing, it wilhbe. noticed that diametrically opposite on its periphery there are two indentations 39 so that a roller 40 (Figs. 1 and2)jmay engagefirst one of these indentations and then the other, to thereby hold this half of the casing against movement as will be shortly described. This roller 40 is inounted on, a small crank arm 41 which is pivoted on the shaft 42, and the opposite 'end of the crank is connected to a rod 43 which in turn-is operated through the lever 44 keyed to the shaft 45, and operable through the handle 46. The small bracket 47 in which is mounted the shaft 45 is positioned on a platform 48 of the paver, as shown in Fig. 1. Also mounted on the shaft 42, are the small spider arms 49 to which the opposite ends of the brake bands 23 are bolted.

.The operation of the device is as follows':- v

Supposing the discharge chute is in its operating or discharging position, as shown in Fig. 1, the handle 46 will be pulled towards the operator, and this, in turn, will cause the small roller 40 to move rearwardly out of the indentation 39 in the casing, and at the same time will apply the brake band to the rim or. collar 22, thus holding the,

orbit gear against rotation, and the sun gear therefore will cause the planet gears to revolve the rear-half of the casing, thus driving the connecting rod 18 upwardly, and in turn operating the bell crank and forcing the chute to its inoperative position, as shown in Fig.2. After the operator has pulled the lever, he should release the tension on the lever and by the time the rear casing had made half a revolution, the opposite indentation will be opposite the roller 40, allowing the roller to fall in to this indentation and atthe same, time releasing the tension on the brake band, this in turn again allowing the orbital gear to revolve, while the rear portion of the casing will be held stationary. The orbital gear will continue to idle until the lever 46 is again operated, and of course when the pressure is again applied to the orbital gear, the planet gears will, of course, revolve the rear half ofv the casing, causing the eccentric to be pulled downwardly, and return the discharge chute to its discharging or operating position. 8

Referring now to Figs. 6, 7 and 8, there is shown a swing or tiltable chute 50 which is similar to the chute shown in my previous Patent, No. 1,394,161, issued October 18, 1921. This chute is pivotally supported by the rod 51 secured on the frame 52 of the paver, while extending across and through the opposite sides of the chute is shown the rod 53 also suitably mounted and provided with the offset portions 5 1. Fastened on the outer end of the rod 53 is the short arm 55 to which is connected the link iii, the latter, in turn, being secured to and operated by the connecting rod 18 of the planetary gear system.

The operation of this form of chute is similar to the operation of the first form of chute described in that an operation of the lever 46 throwing the casing of the planet ary gear into operation will impart a vertical movement to the connecting rod 18,

and in this instance the movement will be impartedthrough the link 56 to the arm 55, thus causing a partial rotation of the rod 53, and in turn causing the chute to swing inwardly and outwardly of the drum about a pivotal axis to its charging and discharging position.

In the one instance, a movement of the connecting rod causes the chute to rotate to a charging and discharging position, while in the other instance, the chute is caused to tilt, swing or oscillate about the pivotal axis as will be readily understood from the description and the drawing.

From the foregoing, it will be seen that by providing a chute and mechanism of either form, such as shown, the discharge chute may be operated smoothly and eificiently, and the take-up or starting of the gears will be in a slow and regular manner, thus relieving the mechanism of any jerks and breakages incidental to other forms of discharge mechanism.

Although I have shown a preferred embodiment and preferred modification of my invention, it is to be understood that many slight changes might be made without in any way departing from the spirit and scope of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A discharge mechanism for concrete pavers comprising a chute movable from a charging to discharging position, a planetary gear, a crank arm, said crank arm connected to said chute and to a portion of said planetary gear, and means for operating the said planetary gear to thereby operate the chute.

2. A discharge mechanism for concrete pavers comprising a pivotal chute, a planetary gear, a crank arm operably connected to said chute and connected to a portion of said planetary gear, and means for operating said planetary gear to thereby 4. A discharge mechanism i'or concretepavers comprising an oscillating chute, a

planetary gear, an intermediate oscillating crank arm connected with said chute and to a part of said gear, means for simultaneously holding the orbital gear from movement and to release that portion of the gear case which is connected with said intermediate member to thereby cause the chute to oscillate from a discharging position to a non-discharging position.

5. A discharge mechanism for concrete pavers comprising a movable chute, a planetary gear and means for driving the same, an eccentric connecting arm mounted on said planetary gear and forming a part thereof, and operably connected with said discharge chute, and means for operating the planetary gear to thereby cause the connecting arm to rise and fall to thereby move the said chute from one of its limits to the other.

6. A discharge mechanism for concrete pavers comprising a tiltable chute, a. planetary gear formed with two casings, means for driving the same, an eccentrically mounted arm secured to one of said casings of said gear, means connecting the eccentrically mounted arm to said tiltable chute, and means for causing the planetary gear to move the arm from its one limit to its other, and then automatically stop to thereby cause said chute to tilt from a charging to discharging position, and vice versa.

7. A dischargev mechanism for concrete pavers comprising a pivotal chute, a planetary gear comprising a casing formed of two halves and the rear half of said casing provided with diametrically opposite indentations in its periphery, means comprising a roller and a brake band associated with said planetary gear,-an eccentrically mounted arm connected to said chute, and means for applying said brake band and removing said roller from an indentation, to thereby cause the rear of said casing to revolve a half revolution and automatically stop and thereby move the chute from one of its limits to the other of its limits.

8. A discharge mechanism for concrete pavers comprising a swinging chute, a planetary gear, a portion of which is provided with oppositely arranged indentations,

means comprising a brake band and a roller, the latter adapted to fit within an indentation, an ecce-ntrically mounted arm on said planetary gear and operably connected with said chute, and means for tensioning said brake band and automatically releasing the roller to thereby permit the eccentrically mounted arm'to partly swing said chute.

9. A discharge mechanism for concrete pavers comprising a chute adapted to move and allowing the orbit gear to revolve, and

means for simultaneously holding the orbital gear and permitting the first mentioned portion of the gear to revolve for a half revolution to thereby move the chute from its one position to its other.

10. A discharge mechanism for concrete pavers comprising a swinging chute, a rod, said chute connected with said rod, an arm connected to said rod, a planetary gear mounted in a casing comprising two portions, the said arm connected to the rear portion of said casing, means for driving said gear, means for holding the orbit gear against movement and allowing the rear portion of the casingto revolve for one half revolution, and means for operating said last mentioned means to thereby idle the orbital gear and hold the rear portion of the, casing from movement to thereby swing the chute from a charging position to a discharging position, and vice versa.

11. A discharge mechanism for concrete pavers, comprising a chute movable from a charging to a discharging position, a planetary gear, an arm pivotally connected to the chute, an arm operably connected to a part of the planetarygear, a pivotal link, connecting the two said arms to thereby move the chute to a charge and discharge position when said planetary gear is operated and means for operating the planetary gear.

12. A discharge mechanism for concrete pavers, comprising a pivotal chute, a planetary gear, a drive shaft for said planetary gear and a plurality of connecting arms and an oscillating pivotal link extending from the planetary gear to the said chute to thereby operate the chute to a charge and discharge position when the planetary gear is operated.

In testimony whereof I affix my signature.

CHARLES E. FOOTE. 

